Classification of judo motor skills: tactical and motor criteria approach (original) (raw)
Related papers
2016
In this paper it is performed the comparative biomechanical analysis of the Kuzushi (Unbalance) – Tsukuri (the entry and proper fitting of Tori’s body into the position taken just before throwing) phases of Judo Throwing techniques. The whole effective movement is without separation, as already stated by old Japanese biomechanical studies (1972-1978), only one skilled connected action, but the biomechanical analysis is able to separate the whole in didactic steps called Action Invariants. The first important finding singled out is the existence of two classes of Action Invariants the first the General one ’ connected to the whole body motion is specific of shortening distance in the Kuzushi Tsukuri Phase. The second one, the Specific Action Invariants is connected to the superior and inferior kinetic chains motion and right positioning connected both to Kuzushi and Tsukuri phases. Some interesting findings derive from this analysis: among throwing techniques, couple techniques could...
Degree and quality of the connection of motor skills and judo techniques
Bastina
The research was conducted with the aim of determining the degree and quality of the connection between judo techniques and motor skills defined as manifest and latent dimensions. Therefore, 237 male respondents aged 11 to 12 years were tested. This sample can be considered representative of judokas of the same age. 20 motor tests were used to assess motor skills. They were chosen for the structural analysis to be performed at the level of second-order factors according to the structural model. For the evaluation of the technical competence of judokas, 7 representatives of certain major groups of techniques were taken. The groups of judo techniques are taken to cover: hand techniques, side techniques, leg techniques, sacrifice techniques, ground hold techniques, chokes and leverage techniques. All variables used in previous research were subjected to thorough validation. Canonical analysis of latent motor dimensions and judo techniques indicated a significant correlation. However, a...
Judo Combat: Time-Motion Analysis And Biomechanical Approach
IJF Academy, 2021
The aim of this work is to connect time-motion analysis of judo combats and biomechanical classification of throwing techniques differenced as lever based and couple-based techniques. The connection of time contest analysis and biomechanical approach made this study punctual, nomothetic and useful for training input. The study sample included 104 judo combats and the collection of 6 time-motion indicators, namely: average combat time, locomotion, technique, ne waza, defense in standing, defense in groundwork phases. The study results showed that the locomotion phase is longer than the other combat phases, while technique phase is the shortest one. Average time durations increased after first round till to final combats. Lever based techniques were used a little bit more than couple-based techniques and this may be taken into account in training process. The semifinal combats, and combats for bronze medal lasted longer than other rounds. Also, the majority of the combats ended before regular time and 19% of the combats finished with golden score. The results of this work give information about time-motion characters of the judo contests that could be connected to the order of magnitude of the energy demands of the real judo competitions, by one heuristic combating equation, for example. The judo coaches may use these findings to plan their training process and improve strategic skills of judokas.
Ido Movement for Culture. Journal of Martial Arts Anthropology, 2019
Background. Judo throwing techniques are traditionally classified as ashi-waza (leg techniques), te-waza (arm techniques), koshiwaza (hip techniques) and sutemi-waza (sacrifice techniques). However, this classification has recently been criticised, and instead a 9-group classification system based on action characteristics (movement type, base of support, throw direction, and position of attack) has been proposed. Problem and aim. To determine the throwing techniques that resulted in score using this classification and compare weight categories, sexes and medal/non-medal winners during the 2017 Senior Judo World Championship. Method. The analysis included 756 throwing techniques that resulted in a score (over 601 matches) across the competition. Results. There was an association between technique classification and sex (c 2 = 15.64; p = 0.048; Cramer`s V = 0.144): females scored more frequently using the techniques from group 3 compared with males (c 2 = 6.93; p = 0.009), whereas males scored more often using the techniques from group 8 compared with females (c 2 = 5.55; p = 0.019). A significant relationship between technique classification and weight category (c 2 = 106.19; p < 0.001; Cramer`s V = 0.153) was observed, but there was no association between technique classification and World Championship classification (c 2 = 9.55; p = 0.298; Cramer`s V = 0.112). Additionally, a limited number of throwing techniques resulted in more than half of all scoring situations during this competition. Conclusions. Techniques types utilised by athletes differed according to sex and weight category, and that a few number of techniques were utilised in this top-level judo competition.
Morfofunctional parameters in judo's fight
Motricidade, 2017
Considering the complexity of judo and the ample energy and neuromuscular demands, a whole process of competitive preparation must be directed to different physical capacities allowing the athlete to perform his combat actions with the best suitability possible. Mapping the behaviour of a judo athlete from observations of behaviour units in a real fighting situation would be a way of trying to identify the best topography or the best "aptitude" to achieve victory. The present investigation analysed the judo from the interactions of a real competition situation, aiming to verify, between winners and losers, possible differences or correlations between anthropometric parameters, motor performance and functional behaviours in a competitive situation. The results showed that: a) the experience is decisive between winning or losing; b) leg techniques are the most used between winners and losers, and losers use them more frequently; c) there are different strategies between fi...
Revista de Artes Marciales Asiáticas
This report describes the 7th European Judo Science & Research Symposium & 6th Scientific and Professional Conference - "Applicable research in judo" held in Poreč, Croatia on June 19-20, 2023. The two-day conference included three keynote speakers on the first day and 20 oral presentations divided into two sections. The second day included four practical sessions, which closed the program. The conference proceedings book was published, which includes 24 papers. The conference was again impeccably organised and had an outstanding return after the Covid-19 interruption, with many exciting topics presented by researchers and judo practitioners. Additionally, slightly more judo coaches and ex-athletes joined the conference, bringing us one step closer to tightening the gap between judo science and coaching.
Quantifying Judo Performance---An Attempt to Judge the Effectiveness of Throwing Attacks
2000
Judo is a combat sport. One way to win is to throw the opponent in a well-performed style. An attempt was made to judge the effectiveness of a throw by analyzing the momentum of the two competitors prior to the throw. We use video kinematography and a simulation system to calculate the momentums. Our method is able to depict the differ-ences between diverse levels of performance quality. Graphics display the differences in the performance skills.